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            <h2 class="title" style="clear: both"><a id="envset_lg_regionmax"></a>DB_ENV-&gt;set_lg_regionmax()</h2>
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      <pre class="programlisting">#include &lt;db.h&gt;

int
DB_ENV-&gt;set_lg_regionmax(DB_ENV *dbenv, u_int32_t lg_regionmax);  </pre>
      <p>
         Set the size of the underlying logging area of the Berkeley DB
         environment, in bytes.  By default, or if the value is set to 0, the
         minimum region size is used, approximately 128KB.  The log region is
         used to store filenames, and so may need to be increased in size if a
         large number of files will be opened and registered with the specified
         Berkeley DB environment's log manager.
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      <p>
         The database environment's log region size may also be configured
         using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file. The syntax of the entry
         in that file is a single line with the string "set_lg_regionmax",
         one or more whitespace characters, and the size in bytes. Because
         the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read when the database environment is
         opened, it will silently overrule configuration done before that
         time.
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      <p>
         The <code class="methodname">DB_ENV-&gt;set_lg_regionmax()</code> method configures a database
         environment, not only operations performed using the specified 
         <a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a>  handle.
    </p>
      <p>
         The <code class="methodname">DB_ENV-&gt;set_lg_regionmax()</code> method may not be called after the
         <a class="xref" href="envopen.html" title="DB_ENV-&gt;open()">DB_ENV-&gt;open()</a>  method is
         called. If the database environment already exists when 
         <a class="xref" href="envopen.html" title="DB_ENV-&gt;open()">DB_ENV-&gt;open()</a>  is called, the
         information specified to <code class="methodname">DB_ENV-&gt;set_lg_regionmax()</code> will be ignored.
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         The <code class="methodname">DB_ENV-&gt;set_lg_regionmax()</code> <span>
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                  method returns a non-zero error value on failure and 0 on success.
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                <h4 class="title"><a id="idp53054736"></a>lg_regionmax</h4>
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          <p>
                          The <span class="bold"><strong>lg_regionmax</strong></span> parameter is the
                          size of the logging area in the Berkeley DB environment, in bytes.
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              <h3 class="title"><a id="idp53026240"></a>Errors</h3>
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        <p>
                         The <code class="methodname">DB_ENV-&gt;set_lg_regionmax()</code> <span>
            <span>
                 method may fail and return one of the following non-zero errors:
            </span>
            
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                <h4 class="title"><a id="idp53076160"></a>EINVAL</h4>
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                If the method was called after <a class="xref" href="envopen.html" title="DB_ENV-&gt;open()">DB_ENV-&gt;open()</a> 
                was called; or if an invalid flag value or parameter was specified.
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              <h3 class="title"><a id="idp53075080"></a>Class</h3>
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                    <a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a>, 
                    <a class="link" href="logc.html" title="The DB_LOGC Handle">DB_LOGC</a>, 
                    <a class="link" href="lsn.html" title="Chapter 7.  The DB_LSN Handle">DB_LSN</a> 
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              <h3 class="title"><a id="idp53078288"></a>See Also</h3>
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                     <a class="xref" href="lsn.html#loglist" title="Logging Subsystem and Related Methods">Logging Subsystem and Related Methods</a> 
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